JavaScript is a scripting language used in web pages and applications, where flaws in code or dependencies can enable attacks and data theft.
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Background for this topic.
JavaScript is a programming language used to add behavior to web pages and to build applications that run outside the browser, including server-side services and tooling. In browsers, scripts can read and modify a page’s content and interact with available web APIs, subject to the browser’s security boundaries.
Its main security risks include cross-site scripting (XSS), in which attacker-controlled input is executed as page code, and DOM-based flaws caused by unsafe handling of data in client-side code. Third-party scripts and package dependencies also expand the code supply chain and may expose user data or introduce vulnerable behavior. Practical controls include context-aware output encoding, avoiding unsafe DOM sinks, restrictive Content-Security-Policy rules, and reviewing, pinning, and monitoring dependencies for vulnerabilities.
A new report dubbed "BrowserGate" warns that Microsoft's LinkedIn is using hidden JavaScript scripts on its website to scan visitors' browsers for installed extensions and collect device data. [...]
A new report dubbed "BrowserGate" warns that Microsoft's LinkedIn is using hidden JavaScript scripts on its website to scan visitors' browsers for installed extensions and collect device data. [...]
Expect Fallout After Remote Access Trojan Added to Popular JavaScript NPM PackageA supply-chain attack backdoored versions of Axios, a popular JavaScript library that's present in many different software packages, to distribute a cross-platform, remote access Trojan. Identifying the full fallout from the attack could take some time, experts warned.
The NPM package for Axios, a popular JavaScript HTTP client library, was briefly compromised this week, possibly by North Korean threat actors.
Hackers hijacked the npm account of the Axios package, a JavaScript HTTP client with 100M+ weekly downloads, to deliver remote access trojans to Linux, Windows, and macOS systems. [...]
A supply chain attack hit Axios when attackers used stolen npm credentials to publish malicious versions containing a phantom dependency. This triggered a cross-platform RAT during installation and replaced its files with clean decoys, making detection challenging.